[INFO] fetching crate duck_back 1.4.0...
[INFO] checking duck_back-1.4.0 against 8773d2c75a8e90130dcce745a7ec4e66bb9963db+rustflags=-Aunfulfilled-lint-expectations for pr-163637
[INFO] extracting crate duck_back 1.4.0 into /workspace/builds/worker-4-tc2/source
[INFO] started tweaking crates.io crate duck_back 1.4.0
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate duck_back 1.4.0
[INFO] tweaked toml for crates.io crate duck_back 1.4.0 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate duck_back 1.4.0 on toolchain 8773d2c75a8e90130dcce745a7ec4e66bb9963db
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8773d2c75a8e90130dcce745a7ec4e66bb9963db" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate duck_back 1.4.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8773d2c75a8e90130dcce745a7ec4e66bb9963db" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
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[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-w" "/opt/rustwide/workdir" "--user" "0:0" "a0a40f0d022e92c76dc9cf48d657bdaccb538704b3028f0f2ba56d6a84becbf4" "/opt/rustwide/cargo-home/bin/cargo" "+8773d2c75a8e90130dcce745a7ec4e66bb9963db" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a0a40f0d022e92c76dc9cf48d657bdaccb538704b3028f0f2ba56d6a84becbf4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid -Aunfulfilled-lint-expectations" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-w" "/opt/rustwide/workdir" "--user" "0:0" "a0a40f0d022e92c76dc9cf48d657bdaccb538704b3028f0f2ba56d6a84becbf4" "/opt/rustwide/cargo-home/bin/cargo" "+8773d2c75a8e90130dcce745a7ec4e66bb9963db" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
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[INFO] [stdout] error[E0277]: the trait bound `BevyResult<u32, (), false>: std::ops::try_trait_old::Try` is not satisfied
[INFO] [stdout]   --> examples/messages.rs:16:21
[INFO] [stdout]    |
[INFO] [stdout] 16 |     let _bad: u32 = bad.else_return()?;
[INFO] [stdout]    |                     ^^^^^^^^^^^^^^^^^-
[INFO] [stdout]    |                     |
[INFO] [stdout]    |                     the trait `std::ops::try_trait_old::Try` is not implemented for `BevyResult<u32, (), false>`
[INFO] [stdout]    |                     required by a bound introduced by this call
[INFO] [stdout]    |
[INFO] [stdout]    = note: `BevyResult<u32, (), false>` implements similarly named trait `Try`, but not `std::ops::try_trait_old::Try`
[INFO] [stdout] help: consider removing this method call, as the receiver has type `Option<u32>` and `Option<u32>: std::ops::try_trait_old::Try` trivially holds
[INFO] [stdout]    |
[INFO] [stdout] 16 -     let _bad: u32 = bad.else_return()?;
[INFO] [stdout] 16 +     let _bad: u32 = bad?;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the trait bound `BevyResult<u32, (), false>: std::ops::try_trait_old::FromResidual<_>` is not satisfied
[INFO] [stdout]   --> examples/messages.rs:16:21
[INFO] [stdout]    |
[INFO] [stdout] 16 |     let _bad: u32 = bad.else_return()?;
[INFO] [stdout]    |                     ^^^^^^^^^^^^^^^^^-
[INFO] [stdout]    |                     |
[INFO] [stdout]    |                     the trait `std::ops::try_trait_old::FromResidual<_>` is not implemented for `BevyResult<u32, (), false>`
[INFO] [stdout]    |                     required by a bound introduced by this call
[INFO] [stdout]    |
[INFO] [stdout]    = note: `BevyResult<u32, (), false>` implements similarly named trait `FromResidual`, but not `std::ops::try_trait_old::FromResidual<_>`
[INFO] [stdout] note: required by a bound in `std::ops::try_trait_old::Try::branch`
[INFO] [stdout]   --> /rustc/8773d2c75a8e90130dcce745a7ec4e66bb9963db/library/core/src/ops/try_trait_old.rs:54:4
[INFO] [stdout] help: consider removing this method call, as the receiver has type `Option<u32>` and `Option<u32>: std::ops::try_trait_old::FromResidual<_>` trivially holds
[INFO] [stdout]    |
[INFO] [stdout] 16 -     let _bad: u32 = bad.else_return()?;
[INFO] [stdout] 16 +     let _bad: u32 = bad?;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the `?` operator can only be used in a function that returns `Result` or `Option` (or another type that implements `std::ops::try_trait_old::FromResidual`)
[INFO] [stdout]   --> examples/messages.rs:16:38
[INFO] [stdout]    |
[INFO] [stdout] 14 | fn start() {
[INFO] [stdout]    | ---------- this function should return `Result` or `Option` to accept `?`
[INFO] [stdout] 15 |     let bad: Option<u32> = None;
[INFO] [stdout] 16 |     let _bad: u32 = bad.else_return()?;
[INFO] [stdout]    |                                      ^ cannot use the `?` operator in a function that returns `()`
[INFO] [stdout]    |
[INFO] [stdout]    = help: the trait `std::ops::try_trait_old::FromResidual<_>` is not implemented for `()`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the `?` operator can only be applied to values that implement `std::ops::try_trait_old::Try`
[INFO] [stdout]   --> examples/messages.rs:16:21
[INFO] [stdout]    |
[INFO] [stdout] 16 |     let _bad: u32 = bad.else_return()?;
[INFO] [stdout]    |                     ^^^^^^^^^^^^^^^^^^ the `?` operator cannot be applied to type `BevyResult<u32, (), false>`
[INFO] [stdout]    |
[INFO] [stdout]    = help: the trait `std::ops::try_trait_old::Try` is not implemented for `BevyResult<u32, (), false>`
[INFO] [stdout]    = note: `BevyResult<u32, (), false>` implements similarly named trait `Try`, but not `std::ops::try_trait_old::Try`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the trait bound `BevyResult<&Transform, QuerySingleError, true>: Try` is not satisfied
[INFO] [stdout]   --> examples/messages.rs:20:34
[INFO] [stdout]    |
[INFO] [stdout] 20 |     let _transform: &Transform = transform.single().else_error()?;
[INFO] [stdout]    |                                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^-
[INFO] [stdout]    |                                  |
[INFO] [stdout]    |                                  unsatisfied trait bound
[INFO] [stdout]    |                                  required by a bound introduced by this call
[INFO] [stdout]    |
[INFO] [stdout]    = help: the trait `std::ops::try_trait_old::Try` is not implemented for `BevyResult<&bevy::bevy_transform::components::Transform, QuerySingleError, true>`
[INFO] [stdout]    = note: `BevyResult<&bevy::bevy_transform::components::Transform, QuerySingleError, true>` implements similarly named trait `Try`, but not `std::ops::try_trait_old::Try`
[INFO] [stdout]    = note: the full name for the type has been written to '/opt/rustwide/target/debug/build/duck_back/ae322b496c1f6ee5/out/messages-ae322b496c1f6ee5.long-type-27563991734478219.txt'
[INFO] [stdout]    = note: consider using `--verbose` to print the full type name to the console
[INFO] [stdout] help: consider removing this method call, as the receiver has type `Result<&bevy::bevy_transform::components::Transform, QuerySingleError>` and `Result<&bevy::bevy_transform::components::Transform, QuerySingleError>: std::ops::try_trait_old::Try` trivially holds
[INFO] [stdout]    |
[INFO] [stdout] 20 -     let _transform: &Transform = transform.single().else_error()?;
[INFO] [stdout] 20 +     let _transform: &Transform = transform.single()?;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the trait bound `BevyResult<&Transform, QuerySingleError, true>: FromResidual<_>` is not satisfied
[INFO] [stdout]   --> examples/messages.rs:20:34
[INFO] [stdout]    |
[INFO] [stdout] 20 |     let _transform: &Transform = transform.single().else_error()?;
[INFO] [stdout]    |                                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^-
[INFO] [stdout]    |                                  |
[INFO] [stdout]    |                                  unsatisfied trait bound
[INFO] [stdout]    |                                  required by a bound introduced by this call
[INFO] [stdout]    |
[INFO] [stdout]    = help: the trait `std::ops::try_trait_old::FromResidual<_>` is not implemented for `BevyResult<&bevy::bevy_transform::components::Transform, QuerySingleError, true>`
[INFO] [stdout]    = note: `BevyResult<&bevy::bevy_transform::components::Transform, QuerySingleError, true>` implements similarly named trait `FromResidual`, but not `std::ops::try_trait_old::FromResidual<_>`
[INFO] [stdout] note: required by a bound in `std::ops::try_trait_old::Try::branch`
[INFO] [stdout]   --> /rustc/8773d2c75a8e90130dcce745a7ec4e66bb9963db/library/core/src/ops/try_trait_old.rs:54:4
[INFO] [stdout]    = note: the full name for the type has been written to '/opt/rustwide/target/debug/build/duck_back/ae322b496c1f6ee5/out/messages-ae322b496c1f6ee5.long-type-17685520736600951754.txt'
[INFO] [stdout]    = note: consider using `--verbose` to print the full type name to the console
[INFO] [stdout] help: consider removing this method call, as the receiver has type `Result<&bevy::bevy_transform::components::Transform, QuerySingleError>` and `Result<&bevy::bevy_transform::components::Transform, QuerySingleError>: std::ops::try_trait_old::FromResidual<_>` trivially holds
[INFO] [stdout]    |
[INFO] [stdout] 20 -     let _transform: &Transform = transform.single().else_error()?;
[INFO] [stdout] 20 +     let _transform: &Transform = transform.single()?;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the `?` operator can only be used in a function that returns `Result` or `Option` (or another type that implements `std::ops::try_trait_old::FromResidual`)
[INFO] [stdout]   --> examples/messages.rs:20:65
[INFO] [stdout]    |
[INFO] [stdout] 19 | fn query(transform: Query<&Transform>) {
[INFO] [stdout]    | -------------------------------------- this function should return `Result` or `Option` to accept `?`
[INFO] [stdout] 20 |     let _transform: &Transform = transform.single().else_error()?;
[INFO] [stdout]    |                                                                 ^ cannot use the `?` operator in a function that returns `()`
[INFO] [stdout]    |
[INFO] [stdout]    = help: the trait `std::ops::try_trait_old::FromResidual<_>` is not implemented for `()`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the `?` operator can only be applied to values that implement `std::ops::try_trait_old::Try`
[INFO] [stdout]   --> examples/messages.rs:20:34
[INFO] [stdout]    |
[INFO] [stdout] 20 |     let _transform: &Transform = transform.single().else_error()?;
[INFO] [stdout]    |                                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the `?` operator cannot be applied to type `BevyResult<&bevy::bevy_transform::components::Transform, QuerySingleError, true>`
[INFO] [stdout]    |
[INFO] [stdout]    = help: the trait `std::ops::try_trait_old::Try` is not implemented for `BevyResult<&bevy::bevy_transform::components::Transform, QuerySingleError, true>`
[INFO] [stdout]    = note: `BevyResult<&bevy::bevy_transform::components::Transform, QuerySingleError, true>` implements similarly named trait `Try`, but not `std::ops::try_trait_old::Try`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0277`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `duck_back` (example "messages") due to 8 previous errors
[INFO] running `Command { std: "docker" "inspect" "a0a40f0d022e92c76dc9cf48d657bdaccb538704b3028f0f2ba56d6a84becbf4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a0a40f0d022e92c76dc9cf48d657bdaccb538704b3028f0f2ba56d6a84becbf4", kill_on_drop: false }`
[INFO] [stdout] a0a40f0d022e92c76dc9cf48d657bdaccb538704b3028f0f2ba56d6a84becbf4
